"Shot in the dark" is a commonly used phrase to describe taking a risky or hopeful action without any real information or certainty of success. However, there are several other expressions that can replace the phrase "shot in the dark," including "gamble," "long shot," "wild guess," "hope against hope," "stab in the dark," or "throwing caution to the wind." Each of these phrases implies the same level of risk and uncertainty and is often used in similar contexts. It's important to know and understand these synonyms to expand your vocabulary and enhance your communication skills.